1. 제 목 : MWNT Sheets for Flexible Electronics
2. 발 표 자 : 이 길 식 (Prof. The University of Texas at Dallas)
3. 일 시 : 2009년 9월 7일(월) 10 : 00 - 12 : 00
4. 장 소 : 공대10호관 103호
5. 초청교수 : 이 정 희 교수
6. 강사약력 :
1975 : 경북대 전자과 졸
1984 : 텍사스대 전자과 석사
1987 : 노쓰캐롤라이나 주립대 전기과 박사
1987-2001 : 루이지에나 주립대 부교수
2001-현재 : University of Texas at Dallas 전기과 교수
7. 내용요약 :
We have pulled sheets from MWNT forests of density ~1011cm-2 and heights of 100um and taller. We have grown the MWNT forests in a quartz and stainless steel cylindrical chamber which has an atmospheric pressure plasma jet (APPJ) at the top. To grow the forests, we have used mixtures of helium and acetylene as the precursor. We also can use various oxidizers (O2,N2O,etc.) and reducers (NH3,H2etc.) to assist in controlling the forest growth, amount of amorphous carbon in the growth and the ability to pull sheets from the forest. The growth is at 680oC for 10 minon 3, 5, 7, or 10nm iron thin films. After the sheets are pulled, 4 copper-tape electrodes are attached for a 4-point probe measurement. The length of the sheet tested here were ~8-14mm, but we have regularly made sheets many meters long from these same forests. The sheet resistivity of a single pulled sheet is ~1.5-3kW/square; and the transmittance is ~0.8 - 0.9. This latter measurement is higher by ~15% than what has been reported in the literature. This work will be important for application of CNT sheets in flexible electronics and other areas.
※ 주최 : BK21 정보기술연구인력양성사업단, 전자전기컴퓨터학부
◀ 문의처 : BK21정보기술연구인력양성사업단 ☎ 950-6613 ▶
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